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© Research
Publication : FEBS letters

A novel patatin-like gene stimulated by drought stress encodes a galactolipid acyl hydrolase

Member: Stéphane Petres
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in FEBS letters - 01 Mar 2001

Matos AR, d'Arcy-Lameta A, França M, Pêtres S, Edelman L, Kader J, Zuily-Fodil Y, Pham-Thi AT

Link to Pubmed [PMID] – 11240125

FEBS Lett. 2001 Mar;491(3):188-92

A cDNA (Vupat1) encoding a predicted 43 kDa protein was isolated from drought-stressed cowpea (Vigna unguiculata) leaves. It has homology with patatin, a potato tuber storage protein with lipolytic acyl hydrolase activity. The recombinant protein VUPAT1 expressed in the baculovirus system displays preferentially galactolipid acyl hydrolase activity. Phospholipids are very slowly hydrolyzed and apparently triacylglycerols are not deacylated. Vupat1 promoter contains putative drought-inducible sequences. Northern blots showed that gene expression is stimulated by drought stress and is more pronounced in a drought-sensitive cultivar than in a drought-tolerant one. An involvement in drought-induced galactolipid degradation is proposed for VUPAT1.